Temperature dependence of a mid-infrared quantum cascade laser with external optical feedback - Archive ouverte HAL Access content directly
Journal Articles Proceedings of SPIE, the International Society for Optical Engineering Year : 2018

Temperature dependence of a mid-infrared quantum cascade laser with external optical feedback

(1, 2) , (3, 4) , (3) , (2) , (3) , (3) , (1, 5)
1
2
3
4
5

Abstract

Quantum cascade lasers (QCLs) exploit radiative intersubband transitions within the conduction band of semiconductor heterostructures. The wide range of wavelengths achievable with QCLs, from mid-infrared to terahertz range, leads to a large number of applications including absorption spectroscopy, optical countermeasures and free space communications requiring stable single-mode operation with a narrow linewidth, high output power and high modulation bandwidth. Prior work has unveiled the occurrence of temporal chaos in a QCL subjected to optical feedback, with a scenario involving oscillations at the external cavity frequency and low-frequency fluctuations. The purpose of this work is to further investigate the temperature dependence of a mid-infrared QCL with optical feedback. When the semiconductor device is cooled down to 170K, experiments unveil that the laser destabilization appears at a lower feedback ratio and that the chaotic bubble slightly expands owing to a different carrier lifetime dynamics. These results are of paramount importance for new mid-infrared applications such as chaos-encrypted free-space communications or unpredictable countermeasures.
Fichier principal
Vignette du fichier
SpitzOlivierSPIE.pdf (777.59 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-02342844 , version 1 (01-11-2019)
hal-02342844 , version 2 (11-11-2019)

Identifiers

Cite

Olivier Spitz, Jiagui Wu, Sudeep Khanal, Mathieu Carras, Benjamin S Williams, et al.. Temperature dependence of a mid-infrared quantum cascade laser with external optical feedback. Proceedings of SPIE, the International Society for Optical Engineering, 2018, Quantum Sensing and Nano Electronics and Photonics, 10540, pp.58. ⟨10.1117/12.2290117⟩. ⟨hal-02342844v2⟩
53 View
155 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More